Instant White : Restore Grubby grouts to diamond bright white for a complete new look . Ultra Smooth : Formulated with flexible resin to smoothly fill any gaps with even finish . Easy To Use : Simply Apply on old tiles and require no hard work of scrubbing tiles to save labor work. WATERPROOF : Seal any seams & gaps with waterproof & moldproof shield Cost Saving : Low Maintenance and Cheaper DIY alternative to replacing new tiles. Safe to Use : Non Toxic , odorless and bleach-free. Harmless & safe to use We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!